You can see the number of sitting breaks on any slide in the Sittings break report. If some slide is having maximum number of sitting breaks it is likely that learners are not understanding either that slide or the concept involving that slide.

Couple more questions. In the Preferences, is the Learner Count the expected number of students? What happens if the actual count exceeds that?

And in the Preferences, slide details, there is a column for Slide Title. It's showing all blank, even though some slides have labels, and I can't enter a slide title here. How is this supposed to work?